My daughter's first beach trip was when she was 6 months old and my son's was when he was 2 months old. We used a Sportbrella to keep them shaded, with a lightweight beach blanket called a Parasheet and a beach mat on the ground, I also have a small high powered portable battery operated clip on fan. It is hard to keep a younger baby cool because they sleep all the time and they can't sit up, so my son barely went to the beach when he was 2 months, but rather stayed in the air conditioning. When he was on the beach he wore a cotton romper because that is cooler than a bathing suit. Keep them hydrated. This will be a different beach experience, make sure you have some grandparents around to watch the kids so that you can get some beach time too!!